SimilarityRank
iChat 0.845 98123
Viber 0.825 71794
FaceTime 0.820 56059
Skype's 0.819 99490
WhatsApp 0.817 61570
Hangouts 0.805 54778
ICQ 0.805 72345
iMessage 0.803 78979
BBM 0.787 47068
VOIP 0.785 38302
WebEx 0.766 81653
Vonage 0.762 66190
Gmail 0.755 16215
skype 0.753 34410
GMail 0.751 71260
Lync 0.750 52221
Jabber 0.750 92482
conferencing 0.748 18899
Voicemail 0.747 85444
VoIP 0.744 13975
Hotmail 0.741 39485
videoconferencing 0.741 53227
Whatsapp 0.739 98929
ActiveSync 0.735 95218
Messaging 0.733 33969